The U.S. Federal Trade Commission is cracking down on D-Link for selling wireless routers and internet cameras that can easily be hacked, the regulator said Thursday.

Thousands of consumers are at risk, the FTC said in a complaint filed against the Taiwanese manufacturer charging D-Link with repeatedly failing to take reasonable measures to secure the products.

The action comes as hackers have been hijacking poorly secured internet-connected products to launch massive cyberattacks that can force websites offline. Recently, a notorious malware known as Mirai has been found infecting routers, cameras, and DVRs built with weak default passwords.

In D-Link's case, the company said its products were "easy to secure" and offered "advanced network security." But in the reality, the devices contained preventable security flaws open to easy exploitation, the FTC alleged.

Among those flaws, were guessable login credentials embedded in D-Link camera software, using the word "guest" for both the username and password.

In addition, D-Link also failed to patch vulnerabilities in the product software, including a command injection flaw that would have given hackers remote control over a device.

"We can’t say whether we will take action against similar companies," an FTC spokesman said on Thursday.